CN100372297C - Service method and system for equipment link - Google Patents
Service method and system for equipment link Download PDFInfo
- Publication number
- CN100372297C CN100372297C CNB2004100303918A CN200410030391A CN100372297C CN 100372297 C CN100372297 C CN 100372297C CN B2004100303918 A CNB2004100303918 A CN B2004100303918A CN 200410030391 A CN200410030391 A CN 200410030391A CN 100372297 C CN100372297 C CN 100372297C
- Authority
- CN
- China
- Prior art keywords
- link
- link maintenance
- user
- maintenance information
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses a maintaining method and a system for a device link. The method comprises the steps: a user link maintaining information table is established; a down-link maintenance request message is sent to a client and up-link maintenance information sent by the client is received; a device updates the user link maintaining information table according to the received up-link maintenance information; a CPU in the device maintains the link of the device according to the user link maintaining information table. The processing capacity and the efficiency of the device to the link maintenance information can be increased by the present invention, and the on-line running for a normal user is guaranteed.
Description
Technical field
The present invention relates to network communications technology field, be specifically related to a kind of maintaining method and system of device link.
Background technology
Along with the high speed development of INTERNET, broadband access network the user sharply increase.In the process of operator's Large scale construction broadband network, networking model has experienced from ATM DSLAM (DSLAM of ATM kernel) to IP DSLAM (DSLAM of IP kernel), and low capacity BAS (BAS Broadband Access Server) is to the transformation of big capacity BAS; Being on the increase of number of netizens, online assault has more and more fiery gesture greatly, and internet worm is popular simultaneously, makes to produce a large amount of abnormal flows in the network, and performance and the device security of big capacity BAS caused a hidden trouble.At present, broadband access method mainly contains: PPPOE (PPP overEthernet) agreement adopts Radius (remote authentication dial-in customer service) authentication, Ethernet (Ethernet) inserts and adopts Portal (door) authentication mode, the maintenance of the user link information of these two kinds of access waies is by timed sending and receives specific link information message, interactive link information reaches user link is detected and safeguards, wherein, PPP (point-to-point protocol) inserts the middle PPP Echo of employing PPPLCP (ppp link control protocol) and asks and PPP Echo response, and the Ethernet access way adopts the ARP among the ARP (address resolution protocol) to ask and the timing of arp response message reaches Link State detection and maintenance alternately.The number of users that requires to insert along with big capacity BAS gets more and more, and system equipment CPU needs the handle link maintenance information more and more, and is also more and more higher to the requirement of cpu performance.Simultaneously, because exception of network traffic, a large amount of exception messages is easy to the strick precaution of the equipment that sees through, on give equipment CPU, so not only caused significant wastage, and needs can have been submitted the normal users link maintenance message that equipment CPU handles and flood, caused the equipment normal users to roll off the production line to cpu performance.How to reduce the continuous demand of big capacity BAS to cpu performance, reduction equipment guarantees that to the complexity of cpu demand the normal online user of BAS equipment is not subjected to the unusual influence of attacking of network, is the problem that BAS equipment manufacturers and Virtual network operator press for solution.
Existing BAS equipment to link maintenance infomational message processing scheme usually as shown in Figure 1.Fig. 1 has described the maintenance and the processing procedure of ppp link information, and link maintenance information processings such as other ARP are similar.
The maintenance of ppp link and detection are carrying out alternately by PPP Echo request and response message, the ppp link maintenance module of PPP client/PPP server end is by regularly sending PPP Echo request message to the PPP opposite end, whether receive corresponding PPP Echo response message in judging regularly, all do not receive the PPP Echo response message that the opposite end is responded if repeatedly send PPP Echo request message, think that then this ppp link breaks down, this link is removed by system.General device is all resolved and is handled by CPU software the maintenance and the processing of ppp link information at present.After PPP client link maintenance of information message receives from system equipment I/O interface, simply discern through the hardware Forwarding plane, give system's upper strata CPU software plane treatment then, finish the parsing of link maintenance infomational message and the processing of link information by upper layer software (applications) ppp link maintenance module.Equally, system equipment software ppp link maintenance module also regularly sends corresponding link maintenance information message to the opposite end, initiatively link is carried out the updating maintenance processing according to the response message of link information is next.
Usually, a large amount of device link maintenance information messages is not only arranged in the message passage between hardware Forwarding plane and the CPU upper layer software (applications), also have a large amount of system maintenance information messages, such as: the route updating packet that system equipment receives, system maintenance information message (telnent) etc.Under or the situation that the hacker attacks unusual at network; may also have a large amount of by the exception message of giving CPU on the hardware Forwarding plane; it is congested to cause this passage to take place; cause abandoning of system's normal link maintenance information message, system equipment because of do not receive user link maintenance information message mistakenly force users roll off the production line.
Especially big capacity BAS equipment vendors of present BAS equipment vendors, for the raising system inserts user capacity and handling property, mostly adopt high-performance CPU or many CPU to handle the method for load sharing, come raising equipment that the timely processing and the raising equipment of link maintenance message are resisted the unusual ability of network.But the complexity that like this, has not only increased equipment cost and realized handling; Even adopt high-performance CPU and many CPU to handle the method for load sharing, having under the situation of a large amount of exception messages, also be difficult to fundamentally solve the congested and normal users that cause of hardware Forwarding plane and the CPU software message passage problem that rolls off the production line.
Summary of the invention
The maintaining method and the system that the purpose of this invention is to provide a kind of device link to link maintenance information processing ability and efficient, ensure the on-line operation of normal users with raising equipment.
The objective of the invention is to be achieved through the following technical solutions:
A kind of maintaining method of device link is characterized in that, described method comprises:
A, set up user link maintenance information table;
B, device interior bottom hardware send down link maintenance request message to client and receive the up link maintenance information of client transmission;
C, described device interior bottom hardware upgrade described user link maintenance information table according to the up link maintenance information of described reception;
The CPU of D, described device interior safeguards device link according to described user link maintenance information table.
Described user link maintenance information table comprises: link refreshes sign, link maintenance Magic (Magic number), Magic number of repetition, allows link to refresh the number of times that sign is not refreshed.
The up link maintenance information that described client sends comprises: up link maintenance request message, down link are safeguarded response message.
Described step C comprises:
The type of C1, the described up link maintenance information of judgement;
If the described up link maintenance information of C2 is a up link maintenance request message, then directly loopback is safeguarded response message corresponding to the up link of described up link maintenance request message, and upgrades information in the described user link maintenance information table according to this message;
If the described up link maintenance information of C3 is that down link is safeguarded response message, then upgrade information in the described user link maintenance information table according to this message.
Described step C3 comprises:
C31, from described up link maintenance information message, obtain Session ID;
C32, search in the described user link maintenance information table corresponding list item according to the described Session ID that obtains;
C33, the link that refreshes in the described corresponding list item refresh sign;
C34, obtain described down link and safeguard Magic sequence number in the response message;
C35, upgrade Magic number of repetition in the described corresponding list item according to described Magic sequence number.
Described step C35 comprises:
Judge and safeguard whether Magic is identical in described Magic sequence number and the described corresponding list item;
If identical, then the Magic number of repetition in the described corresponding list item is added 1;
If inequality, then do not deal with.
Described step D comprises:
D1, described CPU inquire about described user link maintenance information table;
D2, judge whether the Magic number of repetition in the described user link maintenance information list item reaches predetermined maximum value;
If D3 reaches maximum, then show the user link generation loop fault of described list item correspondence, remove the user link of described correspondence;
If D4 does not reach maximum, then refresh the maximum times that sign is not refreshed the user link of described list item correspondence is safeguarded according to the permission link in the described list item.
Described device interior bottom hardware is: network processing unit or field programmable logic device.
A kind of maintenance system of device link is characterized in that, described system comprises:
Network access equipment, pc client;
Described network access equipment comprises:
The user link information-storing device is used to store user link information;
CPU is used for according to described user link maintenance of information device link;
The hardware handles device, be used to transmit downlink user link maintenance request message, the reception of described CPU transmission and handle the up link maintenance information of described pc client transmission, the back message using of direct loopback up link maintenance request, described hardware handles device comprises:
Input/output interface is used for communicating by letter of described network access equipment and described pc client;
User link maintenance of information device is used for upgrading the user link information that described user link information-storing device is stored according to the up link maintenance information that receives.
By above technical scheme provided by the invention as can be seen, the present invention is by directly transferring to a large amount of normal link maintenance informations the identification of equipment bottom hardware, handling and termination, alleviated the load that equipment CPU handles a large amount of link maintenance information, improved the treatment effeciency of CPU, reduced big capacity BAS equipment CPU high-performance or many cpu loads are shared the complexity that expensive and system that demand brings realizes; Solved equipment CPU simultaneously when being subjected to network attack, because a large amount of hardware Forwarding plane messages are delivered CPU, between CPU and hardware Forwarding plane message passage, form congested, the user offline problem that makes the link maintenance packet loss and cause, reduce the influence that network aligns the line user that is everlasting unusually, ensured normal online user's stability.
Description of drawings
Fig. 1 be in the prior art broadband access equipment to the processing procedure schematic diagram of link maintenance infomational message;
Fig. 2 is the present invention program's a principle schematic;
Fig. 3 is the maintenance system structural representation of present device link;
Fig. 4 is the workflow of the bottom hardware of device interior in the inventive method;
Fig. 5 is the workflow of the CPU of device interior in the inventive method.
Embodiment
Core of the present invention is a large amount of normal link maintenance informations in the device link maintenance work are directly transferred to the identification of equipment bottom hardware, handled and termination, and with the link maintenance information setting to the shared drive table of CPU agreement in, by the equipment bottom hardware this table is safeguarded, CPU is by inquiry shared drive table, realization ensures that to the maintenance of device link normal online user's is stable.Its principle as shown in Figure 2.
The present technique field personnel know, ppp link maintenance information message format fixes, simply, be easy to identification and handle.The summary of chain link control protocol packet format is as follows:
0?1?2?3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| code | identifier | length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| data ...
+-+-+-+-+
Wherein, code domain is an eight bit byte, determines the kind of LCP (LCP) bag.Identifier domain is an eight bit byte, to helpful in matching request and the answer.When the bag that has invalidated identification symbol territory is received, this bag will not influence auto-mechanism, be dropped.Length field is two eight bit bytes, points out the length of LCP bag, comprises code, identifier, length and data field.Byte beyond the length field is taken as filler and ignores processing.When receiving that having invalidated identification accords with this bag and will not influence auto-mechanism, is dropped.Data field is zero or a plurality of eight bit bytes, is stated by length field.The form of data field is determined by code domain.
LCP comprises Echo-Request and the Echo-Reply code is supplied with the use that a data link layer loopback mechanism is come manoeuvre link both sides.When an Opened at LCP (opening) state receives Echo-Request, must transmit an Echo-Reply.
Echo-Request and Echo-Reply packet format are as follows:
0?1?2?3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| code | identifier | length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Magic-Number|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| data ...
+-+-+-+-+
Wherein, code 9 is Echo-Request, and 10 is Echo-Reply.
In the reception, the identifier domain of Echo-Request is copied into the identifier domain of Echo-Reply bag.
The Magic-Number territory is four eight bit bytes, and is helpful to the link that detection is under the looped-back condition.
According to ppp link maintenance information message (PPP ECHO request and corresponding message) form fix, simply (message format is seen RFC 1661), hardware Forwarding plane are easy to discern and characteristics such as processing, directly user PPP Echo request and response message are discerned and terminated by the hardware Forwarding plane and (fix according to message format, PPP LCP ECHO message can be identified in the hardware plane, its Code value is 9 to correspond to PPP Echo request, and Code value is that 10 corresponding PPP Echo respond).
The processing of hardware Forwarding plane comprises:
1. send and receive link maintenance information.
The message that sends comprises: the PPP Echo request of the server end of forwarding (the ARP request that Ethernet inserts); Directly the server end of Fa Songing to client to local terminal request responding PPP Echo response message (Ethernet insert arp response).
The message that receives comprises: the PPP Echo request that client sends (the ARP request that Ethernet inserts); Client is to the response PPP Echo response message (arp response that Ethernet insert) of local terminal server to client-requested.
2. to receiving the processing of message.
Reception is discerned from the link maintenance message that the I/O interface receives, if the response message that client sends then upgrades corresponding user link maintenance information table according to message information; If the request message that client sends, then direct back response message, and upgrade the user link Maintenance Table according to this request message simultaneously, after handling, the link maintenance infomational message is no longer submitted CPU and is handled, and directly abandons.
The processing of CPU comprises:
Regularly whether inquiring user link maintenance information table upgrades to judge whether user link is normal according to the information of this table, and adjusts the link maintenance parameter, sends the link maintenance request message to user side.If repeatedly send the link request message, user link link corresponding information table does not upgrade, and then judges link failure, removes this link.
According to above-mentioned principle, the maintenance system of present device link as shown in Figure 3.
This system comprises: network access equipment 30 and pc client 31.Realize detection and maintenance by network access equipment 30 and pc client 31 interactive link information to user link.
User link information-storing device 301 is used to store user link information;
Hardware handles device 303 is used to transmit downlink user link maintenance request message, the reception of CPU 302 transmissions and handles the up link maintenance information of pc client 31 transmissions, the back message using of direct loopback up link maintenance request message.Wherein, the up link maintenance information of pc client 31 transmissions comprises: up link maintenance request message, down link are safeguarded response message.The hardware handles device can be realized by NP (network processing unit) or FPGA (field programmable logic device).
Hardware handles device 303 comprises: input/output interface 304 and user link maintenance of information device 305.Wherein, input/output interface 304 is used for communicating by letter of network access equipment and pc client; User link maintenance of information device 305 is used for upgrading according to the up link maintenance information that receives the user link information of user link information-storing device 301 storages.
In order to make those skilled in the art person understand the present invention better, the inventive method is elaborated below in conjunction with apparatus of the present invention shown in Figure 3.
At first, when PPPOE user consults successfully in the LCP stage, set up a user link maintenance information table, set the bottom hardware of CPU and device interior and share this table by CPU (central control unit).Described user link maintenance information table comprises: user identifier, link refresh sign, link maintenance Magic, Magic number of repetition, allow link to refresh the number of times that sign is not refreshed, wherein, after setting up user link first, the permission link in should the list item of user link is refreshed the number of times that sign is not refreshed be predisposed to predetermined maximum value; Bottom hardware (the hardware retransmission unit 303 among Fig. 3) by device interior upgrades user link maintenance information table according to the up link maintenance information of the client transmission that receives then, simultaneously, the down link maintenance request message that issues of CPU also is transmitted to client by this bottom hardware; CPU safeguards device link according to user link maintenance information table.
With reference to Fig. 4, Fig. 4 is the workflow of the bottom hardware of device interior in the inventive method, may further comprise the steps:
Step 401: receive the up link maintenance information that client sends.The up link maintenance information that client sends comprises: up link maintenance request message, down link are safeguarded response message.
Step 402: the type of judging the up link maintenance information.
If the up link maintenance information is a up link maintenance request message, then enter step 403: directly loopback is safeguarded response message corresponding to the up link of up link maintenance request message.Then, enter step 404: from described up link maintenance information message, obtain Session ID.
Safeguard response message if the up link maintenance information is a down link, then enter step 404: from described up link maintenance information message, obtain Session ID.
Step 405: search list item corresponding in the user link maintenance information table according to the Session ID that obtains.
Step 406: the link that refreshes in the corresponding list item refreshes sign.
Step 407: obtain down link and safeguard Magic sequence number in the response message.
Step 408: whether the Magic sequence number of relatively obtaining is identical with link maintenance Magic in the corresponding list item.
If identical, then enter step 409: the Magic repeat count in the corresponding list item is added 1, then, enter step 410: described down link is safeguarded that response message directly abandons, no longer deliver upper strata CPU and handle;
If inequality, enter step 410: described down link is safeguarded that response message directly abandons, no longer deliver upper strata CPU and handle.
With reference to Fig. 5, Fig. 5 is the workflow of the CPU of device interior in the inventive method, may further comprise the steps:
Step 501:CPU inquiring user link maintenance information table.
Step 502: judge whether the link maintenance Magic in the user link maintenance information list item reaches predetermined link maintenance Magic maximum.
If reach maximum, then show the user link generation loop fault of described list item correspondence, enter step 503: remove corresponding user link.
If do not reach maximum, then enter step 504: detect permission link in the list item and refresh whether the number of times that sign is not refreshed is 0.
If be 0, show that then the user link of described list item correspondence breaks down, enter step 503: remove corresponding user link.
If be not 0, then enter step 505: whether the link in the detection list item refreshes sign and is refreshed.
Be refreshed if link refreshes sign, then enter step 506: will allow link to refresh the number of times that sign is not refreshed and be adjusted into predetermined maximum value.
Step 507: send down link maintenance request message to the list item clients corresponding.
Step 508: the link of removing in the list item refreshes sign.
Be not refreshed if link refreshes sign, then enter step 509: will allow link to refresh the number of times that sign is not refreshed and subtract 1.
Then, enter step 507: send down link maintenance request message to the list item clients corresponding.
Above embodiment has introduced and used the maintenance process of the present invention to device link in network access equipment.It will be appreciated by those skilled in the art that, thought of the present invention can also be applied to different occasions and environment with method, the control message information need be delivered the processing that CPU obtains link information as long as relate to, can use method provided by the invention, by hardware to control message Direct Recognition and processing, and be kept in the shared information table with CPU agreement by link maintenance information, control information is notified to CPU, reach the maintenance of control message and the purpose of processing, improve the treatment effeciency of CPU.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (9)
1. the maintaining method of a device link is characterized in that, described method comprises:
A, set up user link maintenance information table;
B, device interior bottom hardware send down link maintenance request message to client and receive the up link maintenance information of client transmission;
C, described device interior bottom hardware upgrade described user link maintenance information table according to the up link maintenance information of described reception;
The CPU of D, described device interior safeguards device link according to described user link maintenance information table.
2. the maintaining method of device link as claimed in claim 1, it is characterized in that described user link maintenance information table comprises: link refreshes sign, link maintenance Magic (Magic number), Magic number of repetition, allows link to refresh the number of times that sign is not refreshed.
3. the maintaining method of device link as claimed in claim 1 or 2 is characterized in that, the up link maintenance information that described client sends comprises: up link maintenance request message, down link are safeguarded response message.
4. the maintaining method of device link as claimed in claim 3 is characterized in that, described step C comprises:
The type of C1, the described up link maintenance information of judgement;
If the described up link maintenance information of C2 is a up link maintenance request message, then directly loopback is safeguarded response message corresponding to the up link of described up link maintenance request message, and upgrades information in the described user link maintenance information table according to this message;
If the described up link maintenance information of C3 is that down link is safeguarded response message, then upgrade information in the described user link maintenance information table according to this message.
5. the maintaining method of device link as claimed in claim 4 is characterized in that, described step C3 comprises:
C31, from described up link maintenance information message, obtain Session ID;
C32, search in the described user link maintenance information table corresponding list item according to the described Session ID that obtains;
C33, the link that refreshes in the described corresponding list item refresh sign;
C34, obtain described down link and safeguard Magic sequence number in the response message;
C35, upgrade Magic number of repetition in the described corresponding list item according to described Magic sequence number.
6. the maintaining method of device link as claimed in claim 5 is characterized in that, described step C35 comprises:
Judge and safeguard whether Magic is identical in described Magic sequence number and the described corresponding list item;
If identical, then the Magic number of repetition in the described corresponding list item is added 1;
If inequality, then do not deal with.
7. the maintaining method of device link as claimed in claim 1 or 2 is characterized in that, described step D comprises:
D1, described CPU inquire about described user link maintenance information table;
D2, judge whether the Magic number of repetition in the described user link maintenance information list item reaches predetermined maximum value;
If D3 reaches maximum, then show the user link generation loop fault of described list item correspondence, remove the user link of described correspondence;
If D4 does not reach maximum, then refresh the maximum times that sign is not refreshed the user link of described list item correspondence is safeguarded according to the permission link in the described list item.
8. the maintaining method of device link as claimed in claim 1 is characterized in that, described device interior bottom hardware is: network processing unit or field programmable logic device.
9. the maintenance system of a device link is characterized in that, described system comprises: network access equipment, pc client; Described network access equipment comprises:
The user link information-storing device is used to store user link information;
CPU is used for according to described user link maintenance of information device link;
The hardware handles device, be used to transmit downlink user link maintenance request message, the reception of described CPU transmission and handle the up link maintenance information of described pc client transmission, the back message using of direct loopback up link maintenance request, described hardware handles device comprises:
Input/output interface is used for communicating by letter of described network access equipment and described pc client;
User link maintenance of information device is used for upgrading the user link information that described user link information-storing device is stored according to the up link maintenance information that receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100303918A CN100372297C (en) | 2004-03-24 | 2004-03-24 | Service method and system for equipment link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100303918A CN100372297C (en) | 2004-03-24 | 2004-03-24 | Service method and system for equipment link |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1674526A CN1674526A (en) | 2005-09-28 |
| CN100372297C true CN100372297C (en) | 2008-02-27 |
Family
ID=35046808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100303918A Expired - Fee Related CN100372297C (en) | 2004-03-24 | 2004-03-24 | Service method and system for equipment link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100372297C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030009573A1 (en) * | 2001-07-04 | 2003-01-09 | Nec Corporation | PPP terminating equipment, network equipment and method of responding to LCP echo requirement |
| CN1414748A (en) * | 2002-05-23 | 2003-04-30 | 华为技术有限公司 | Method of effectively obtaining back message using network exchange equipment |
| CN1452347A (en) * | 2002-04-20 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Method for detecting medium gateway controller and medium between-gateways link state |
| CN1466320A (en) * | 2002-06-12 | 2004-01-07 | 华为技术有限公司 | Updating method for address analytic protocol table in network equipment |
| KR20040010930A (en) * | 2002-07-25 | 2004-02-05 | 삼성전자주식회사 | apparatus and method of management for ATM Adaptation Layer1 link connection condition Access GateWay |
| WO2004014035A1 (en) * | 2002-08-01 | 2004-02-12 | Research In Motion Limited | Always-on wireless internet protocol communication |
-
2004
- 2004-03-24 CN CNB2004100303918A patent/CN100372297C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030009573A1 (en) * | 2001-07-04 | 2003-01-09 | Nec Corporation | PPP terminating equipment, network equipment and method of responding to LCP echo requirement |
| CN1452347A (en) * | 2002-04-20 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Method for detecting medium gateway controller and medium between-gateways link state |
| CN1414748A (en) * | 2002-05-23 | 2003-04-30 | 华为技术有限公司 | Method of effectively obtaining back message using network exchange equipment |
| CN1466320A (en) * | 2002-06-12 | 2004-01-07 | 华为技术有限公司 | Updating method for address analytic protocol table in network equipment |
| KR20040010930A (en) * | 2002-07-25 | 2004-02-05 | 삼성전자주식회사 | apparatus and method of management for ATM Adaptation Layer1 link connection condition Access GateWay |
| WO2004014035A1 (en) * | 2002-08-01 | 2004-02-12 | Research In Motion Limited | Always-on wireless internet protocol communication |
Non-Patent Citations (3)
| Title |
|---|
| A Method for Transmitting PPP Over Ethernet (PPPoE). L. Mamakos, K. Lidl.RFC2516. 1999 * |
| PPP Link Quality Monitoring. W. Simpson.RFC1989. 1996 * |
| The Point-to-Point Protocol (PPP). W. Simpson.RFC1661. 1994 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1674526A (en) | 2005-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101110821B (en) | Method and apparatus for preventing ARP address cheating attack | |
| CN101465856B (en) | Method and system for controlling user access | |
| US7184445B2 (en) | Architecture and API for of transport and upper layer protocol processing acceleration | |
| CN101022340B (en) | Intelligent control method for realizing city Ethernet exchanger switch-in security | |
| CN105516080B (en) | The processing method of TCP connection, apparatus and system | |
| CN101453495B (en) | Method, system and equipment for preventing authentication address resolution protocol information loss | |
| US20060221946A1 (en) | Connection establishment on a tcp offload engine | |
| CN102255984B (en) | Method and device for verifying ARP (Address Resolution Protocol) request message | |
| CN106453356B (en) | The bilateral acceleration transmission method of wireless network and system | |
| CN107277058A (en) | A kind of interface authentication method and system based on BFD agreements | |
| WO2019237683A1 (en) | Protocol packet, and method for managing virtual client terminal device | |
| CN107682442A (en) | A kind of Web connection methods and device | |
| WO2009100675A1 (en) | Web page pushing method, system and apparatus thereof | |
| US8239548B2 (en) | Endpoint discriminator in network transport protocol startup packets | |
| US20230413120A1 (en) | Methods and systems for communication session management | |
| CN104009961A (en) | PPPoE session ID distribution method and equipment thereof | |
| CN100372297C (en) | Service method and system for equipment link | |
| CN104301336A (en) | PPPoE access authentication method | |
| CN103856571B (en) | A kind of adaptive networking connection method and system | |
| CN109474588A (en) | A kind of terminal authentication method and device | |
| CN105577433B (en) | A kind of ACS cluster management method, device and system | |
| CN102136985B (en) | Access method and equipment | |
| US8209420B2 (en) | Management of duplicate TCP connections using sequence and acknowledgment numbers | |
| Cisco | Connection Commands | |
| CN103001930A (en) | Remote data communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20190324 |